If you arent doing anything blackhat why worry about the ctr?
This is a common mythical fear instilled by the adsense 'gurus' that ctr should be low..what the hell! Adsense is for earning money its not written anywhere what your ctr should be. If your traffic is legit, and converts for the advertisers. Advertisers make money. Google makes money. You make money. Simple.
Dont get your adsense banned for no reason.

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